Part of a burglar alarm



FIG. 1 is a front isometric view of part of a burglar alarm embodying the new design;

FIG. 2 is a rear view of the design shown in FIG. 1;

FIG. 3 is a front view of the design shown in FIG. 1;

FIG. 4 is a top view of the design shown in FIG. 1;

FIG. 5 is a right side view of the design shown in FIG. 1; and,

FIG. 6 is a left side view of the design shown in FIG. 1. 

CLAIM The ornamental design for part of a burglar alarm, as shown and described. 